StyleBootstrap will give you a finer grained control over the color choices. It allows you to format fonts and colors of elements of the Bootstrap layout like the Navbar, the text body, buttons and forms.

Boilerstrap combines Bootstrap with lots of useful tools you almost certainly want to have like the HTML5 Boilerplate tweaks, Modernizr loading, javascript compression and other useful things.

WrapBootstrap has a list of commercial Bootstrap template with an option to buy one if you like it.